:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}body{margin:0;font-family:Segoe UI,sans-serif;background-color:#f8fafc}.container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem}.card{max-width:480px;width:100%;padding:2.5rem;border-radius:12px;background:#fff;box-shadow:0 10px 25px #0000000d;text-align:center}.card .icon{font-size:48px;margin-bottom:1rem}.card h1{font-size:28px;margin-bottom:1rem}.card p{font-size:16px;color:#555;margin-bottom:2rem}.btn{display:inline-block;padding:.75rem 1.5rem;background-color:#2563eb;color:#fff;border-radius:6px;text-decoration:none;font-weight:700;transition:background .3s ease}.btn:hover{background-color:#1e40af}.success .icon{color:#16a34a}.failure .icon{color:#dc2626}